Before Planning:
First of all, do believe that you have got enough time to clear PCC in coming May.
The attempts in past in which you were not able to clear…think it as an Investment.
You are surely going to get benefited from those attempts. This self belief would give you immense Motivation & Confidence must needed for the Studies.
While Planning:
Make weekly Plans. Give importance to Quality studies rather than its Quantity. There is not point in getting over ambitious. Change the Strategy which have not worked for you in past.
Execution:
For theory subjects, first revise the “work” you have already done for your previous exams. Analysis the mistakes you have committed. On that basis, think what you can add to your revision part. For Costing, again concentrate on Quality i;e “The Concept behind any porblem”. Try to solve just few Problems but it should be solved in depth. Rather than you asked, “How to solve the Problem” ask “Why the Problem should be solved in a particular way”
All the Best for your Studies.